What if I need to make an adjustment to a catering order, such as if an item is no longer available? Linh Lam Updated October 11, 2016 15:50 Follow Give Customer Care a call at (877) 585-1085 and we'll sort it out. Related articles What if I’m unable to fulfill a Large or catering order? I’m interested in offering catering on Grubhub. How do I do that? How do I update my menu to participate in marketing programs like Restaurant Week? Comments 0 comments Article is closed for comments.